package com.community.windy.controller.advice;


import com.community.windy.util.CommunityUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;


//只搜索Controller注解
@ControllerAdvice(annotations = Controller.class)
public class ExceptionAdvice {


    private static  final Logger logger = LoggerFactory.getLogger(ExceptionAdvice.class);

    @ExceptionHandler({Exception.class})
    public void handleException(Exception e, HttpServletRequest request, HttpServletResponse response)
            throws IOException {
        logger.error("服务器发生异常："+e.getMessage());
        for (StackTraceElement element:e.getStackTrace()){
            logger.error(element.toString());
        }
        String xRequestedWith  = request.getHeader("x-requested-with");

        //判断是不是异步请求
        if ("XMLHttpRequest".equals(xRequestedWith)){

            response.setContentType("application/plain;charset=uft-8");
            PrintWriter writer = response.getWriter();
            writer.write(CommunityUtil.getJSONString(1,"服务器异常！"));
        }else {

            response.sendRedirect(request.getContextPath()+"/error");
        }

    }

}
